Be careful where you mount this beast !
I too had high hopes that this device would "quietly" mitigate the humidity (RH) levels in our 2000 sq. ft. concrete-enclosed 42" crawl space.
Our Tjernlund V2D device is completely isolated from the wood floor joists (mounted directly & with rubber bushings, onto the top concrete foundation wall and up into the joist cavity, without touching any wood). Different foundation vent locations where tried but in each of them and in the quiet of the night we could definitely hear the run of the twin fans in our living areas upstairs, even under heavily insulated hardwood floors.
We've since _compromised_ on a vent location that is more remote from main living or bedroom areas.
To be clear, the V2D does seem to move along its rated amount of air, but at the expense of velocity noise (and frequency vibration if contacting any house structural components).
Another observation: the enclosed humidistat seems to sense the RH just at its mounted...
Good Product
Installed two of these in my crawl space. They work well, run fine, and are well made. Initially, I had some noise issues and determined it was the vibration from the fans running. Fairly easy to fix, just isolate from the frame of the house. I used some strips of foam and rubber-covered washers and that solved the noise problem.
whisper quiet; high quality
i can't tell you how much i hesitated buying this fan after reading reviews that said the fan was loud. i hate appliance noises. lost sleep over it.
all for naught!
this thing is SUPER QUIET and the fans are of higher quality than i was expecting. I am super satisfied. i'll try to upload a video soon so you can hear how quiet it really is. at one point i almost had to look to see if the blades were spinning.
4/19 EDIT: there's no suggestion or guidance on where to set the humidistat. couldn't even find conclusive info online.
my totally non-scientific number seems to be at 70%. it's on when the rainy days and humid mornings come, but not on all the time. And this application is in the very humid DC area.
kill-a-watt says this guy is working at 35.5 watts.
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